Thyroid stimulating hormone

Thyroid stimulating hormone is mainly a glycoprotein hormone secreted by pituitary basophils. Under the action of thyroid stimulating hormone releasing hormone (TRH), the pituitary gland can also synthesize and release thyroid stimulating hormone. Thyroid-stimulating hormone can promote thyroid cell proliferation, promote thyroid synthesis and secretion of thyroid hormone, and increase the secretion of thyroid hormone can feedback inhibition of thyroid-stimulating hormone secretion. It is regulated by triiodothyronine, thyroxine and central nervous system in the body, showing a circadian rhythm change. It is the highest at 2 to 4 in the morning and the lowest at 6 to 8 in the afternoon. Detection of thyroid stimulating hormone is the most sensitive indicator for clinical diagnosis of primary hypothyroidism, and is of great value for the diagnosis of thyroid dysfunction and lesions. Basic Information Specialist classification: examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Pituitary hypothyroidism, hyperthyroidism caused by non-thyroid stimulating hormone tumors, as well as ingestion of aspirin, corticosteroids and intravenous heparin. Normal value: Blood TSH: 2-10mU/L Above normal: Primary hypothyroidism, Hashimoto's disease with hypothyroidism, exocyto-thyroid stimulating hormone secreting tumor (lung, breast), subacute thyroiditis recovery period. The intake of metal lithium, potassium iodide, and thyroid stimulating hormone can increase thyroid stimulating hormone. negative: Positive: Tips: After 8 pm on the day before the medical examination, you should start fasting for 12 hours, so as not to affect the test results. Normal value Adults 2 to 10 mU/L. > 60-year-old male 2.0 to 7.3 mU/L. Children (4.5 ± 3.6) mU / L. Clinical significance Reduced in secondary hypothyroidism, diffuse goiter with hyperthyroidism. Elevated in primary hypothyroidism, thyroid stimulating hormone secretory pituitary tumor, hypopituitarism, subacute thyroiditis recovery period. Low results may be diseases: high hypothyroidism may result in diseases: precautions for hyperthyroidism in the elderly 1, precautions before blood draw (1) Do not eat too greasy, high-protein foods the day before the blood draw, and avoid heavy drinking. The alcohol content in the blood directly affects the test results. (2) After 8 pm on the day before the medical examination, fasting should be started for 12 hours to avoid affecting the test results. (3) Relax the mood when taking blood, avoid the contraction of blood vessels caused by fear, and increase the difficulty of blood collection. 2, should pay attention after blood draw (1) After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. (2) The pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. (3) Symptoms of fainting after blood draw, such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. (4) If there is localized congestion, use a warm towel after 24 hours to promote absorption. 3. Please inform the doctor about the recent medication and special physiological changes before the test. Inspection process Hormone assay. Not suitable for the crowd People with reduced hematopoietic function such as leukemia, various anemia, myelodysplastic syndrome, or people with thrombocytopenia should pay attention to blood draw, and should not take more or more blood. Adverse reactions and risks 1. After the blood is drawn, do not press the needle hole to avoid subcutaneous hematoma. If there is a small piece of bruise in the blood, it is slightly tender, please don't panic, you can do hot compress after 24 hours to promote the absorption of blood. The general small amount of congestion will gradually absorb in 3 to 5 days and the color will become lighter and return to normal. 2, after the blood draw symptoms of dizziness such as: dizziness, vertigo, fatigue, etc. should immediately lie flat, drink a small amount of sugar water, and then undergo a physical examination after the symptoms are relieved.